Ellen Stofan saw her first rocket launch when she was 4 years old. Now, more than 50 years later, she's director of the National Air and Space Museum — the first woman to hold the position.

Stofan, a former chief scientist at NASA, comes to the position with more than 25 years of field experience. But before all that, she was just a kid who fell in love with science — specifically, with rocks.

From San Francisco to Washington, D.C., e-scooters and dockless bikes have become the latest transportation trend to grip urban spaces — and local governments are struggling to keep up.

The concept is simple: Riders download an app, find and unlock a scooter or bike, and leave it when they're done. Many cost as little as $1, and fans of the services tout them as faster, easier, and greener ways to get where they're going.

Long before he was the leader of rock octet Nathaniel Rateliff & the Night Sweats, Nathaniel Rateliff was a kid in rural Missouri sneaking around listening to rock and roll. Rateliff remembers finding a Led Zeppelin tape out in a country barn and secretly listening to it over and over in his headphones.